small lot with 4 stamps, 3 Kreuzer black on yellow respectively black on central- to vibrant olive yellow, full margins, used, both stamps of the d-colour expertized Irtenkauf BPP respectively Thoma BPP and Heinrich BPP, a horizontal pair of the type V on small letter piece with strong shifted stereotype, cancelled with double circle cancel "STUTTGART 9 November 1855", for that abridged certificate Klaus Irtenkauf BPP (2003) "genuine and immaculate